Improvement in garden-syringes



i` JJODUSQU @tafelen Syringe.

PATENTE JUL 41am` ATENT Orrron WILLIAM J. JOHNSON, OF NEWTON, MASSACHUSETTS.

IMPROVEMENT IN GARDEN-SVRING'ES.

Specification forming pai-tof Letters Patent No. 116,599, dated July 4, 1571.

To all whom 'it may concern:

Beit known that I, WILLIAM J. J onNsoN, of Newton, in the State of Massachusetts, have invented certain new and useful Improvements in Gaiden-Syringes, of which the following', with the drawing, is a description:

Figure l is a View of the syringe. f Fig. 2 is a section of the same. Fig. 3 is a View of part of pistourod and valve. Fig. 4 represents the valve and check-nuts on the iront side. Fig. 5 is a sec- .tion ofthe leather valve-bucket. Fig. (i is a scction of a modified form of the syringe.

A is the outer cylinder-case, having an outlet at I). B is an inner cylinder-case, having an inlet at (l, and being open at its rear end b. E is the piston-rod, with handle F. c is the space between the inner and outer cylinder-cases, and below the inner one d is a valve-nut, having recesses or water-ways i' i to allow the water to pass; and o is a check-nut on the inner end of the piston. e is a leather valve or cup behind the valve-nut. h

is a ball-Valve in the inlet O. J J are packings p of joints. fare hollow huts, one screwed to the outer casing, and the other, through which the piston passes, screwed to the former, forming the stuffing-box p. g is an extra nose or sprinkler to the outlet I), or a place for one. m is a suctionpipe with nose n.

When the piston is drawn back the water flows in at O and fills the inner cylinder. W hen the piston is pushed forward the water being retained by the Valve L is displaced 'and flows over the open rear of the inner cylinder at b, filling the space c between that andthe outer case. When the piston is again drawn back the valve-cup e draws back the water in a., whichrepresents the interior of the inner cylinder7 forcing it overb into o and out at D. The, piston being again forced forward displaces the water which iiowed in on its last backward movement, and forces again so much over b into c and out at D. The piston, in passing forward, passes through the water, by means of the openings lL' fi and the shape and action of the leather valve-capte. By this means the piston lifts in one way and forces in both ways of its action. r

Fig. (i shows a modification where the inner cylinder is placed against the side or bot-tom of the outer one, so that the water-way space c does not extend round or inclose it wholly. The water-way c may lie outsidel of a, and be connected by a pipe. In these cases the space c between the outer and inner, or the two cylinders or the separate space o, forms a water-way, through which the water is forced to the outletat each and by eithe stroke of the piston.

ln using the syringe, lill a pail with the fluid to be ejected upon a bush or plant, insert the suction-pipe, hohl the pail and support the syringe with the lett hand, and guide and operate thel syringe with the right hand.

I know of no other syringe usin an outer cylinder as a wa ter-way, and operating with the ease, simplicity, and force of mine. s

X/Vhat I claim is- The double-ehambered garden-syringe, constructed and operating substantially as vdescribed.

In testimony whereof I have hereunto subscribed my name.

NVM. J. JOHNSON.

Witnesses:

A. B. ELY, J. W, PRESTON. 

